Open AccessФазовые переходы в атиферромагнитной модели Гейзенберга на объемно-центрированной кубической решетке с учетом взаимодействий следующих ближайших соседей
Author(s) -
А. К. Муртазаев,
М. К. Рамазанов,
Д. Р. Курбанова,
М. К. Бадиев
Publication year - 2018
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2018.06.45993.15m
Subject(s) - antiferromagnetism , condensed matter physics , monte carlo method , k nearest neighbors algorithm , phase transition , exchange interaction , heisenberg model , paramagnetism , physics , lattice (music) , histogram , statistical physics , materials science , computer science , mathematics , ferromagnetism , artificial intelligence , statistics , acoustics , image (mathematics)
Based on the replica exchange Monte Carlo algorithm and histogram analysis of data, the phase transitions in the three-dimensional antiferromagnetic Heisenberg model on a body-centered cubic lattice with allowance for the next-nearest-neighbor interaction are studied. The study is performed for the nextnearest- neighbor exchange interaction ratio of r = 1. It is established that, for this model, the transition from the antiferromagnetic to paramagnetic phase is a first-order phase transition.